Shown with a cast-on count of 26 stitches.  

• Row 1 (RS): P6, *k1, p12, repeat from * to last 7 sts, k1, p6.
• Rows 2 and 10: K4, *p2, k1, p2, k8, repeat from * to last 9 sts, p2, k1, p2, k4.
• Rows 3 and 9: P3, *k2, p3, k2, p6, repeat from * to last 10 sts, [k2, p3] twice.
• Rows 4 and 8: K2, *p2, k5, p2, k4, repeat from * to last 11 sts, p2, k5, p2, k2.
• Rows 5 and 7: P1, k2, p7, k2, p2, *, repeat from * to last 12 sts, k2, p7, k2, p1.
• Row 6: P2, *k9, p4, repeat from * to last 11 sts, k9, p2.